diff --git a/Dockerfile b/Dockerfile
index b4b49c99..282222ca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/linuxserver/baseimage-rdesktop-web:focal
+FROM ghcr.io/linuxserver/baseimage-rdesktop-web:jammy
 
 # set version label
 ARG BUILD_DATE
@@ -6,8 +6,12 @@ ARG VERSION
 LABEL build_version="Linuxserver.io version:- ${VERSION} Build-date:- ${BUILD_DATE}"
 LABEL maintainer="thelamer"
 
+# prevent Ubuntu's firefox stub from being installed
+COPY /root/etc/apt/preferences.d/firefox-no-snap /etc/apt/preferences.d/firefox-no-snap
+
 RUN \
   echo "**** install packages ****" && \
+  add-apt-repository -y ppa:mozillateam/ppa && \
   apt-get update && \
   DEBIAN_FRONTEND=noninteractive \
   apt-get install --no-install-recommends -y \
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index 7080e6a3..246cf5c3 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,4 +1,4 @@
-FROM ghcr.io/linuxserver/baseimage-rdesktop-web:arm64v8-focal
+FROM ghcr.io/linuxserver/baseimage-rdesktop-web:arm64v8-jammy
 
 # set version label
 ARG BUILD_DATE
@@ -6,8 +6,12 @@ ARG VERSION
 LABEL build_version="Linuxserver.io version:- ${VERSION} Build-date:- ${BUILD_DATE}"
 LABEL maintainer="thelamer"
 
+# prevent Ubuntu's firefox stub from being installed
+COPY /root/etc/apt/preferences.d/firefox-no-snap /etc/apt/preferences.d/firefox-no-snap
+
 RUN \
   echo "**** install packages ****" && \
+  add-apt-repository -y ppa:mozillateam/ppa && \
   apt-get update && \
   DEBIAN_FRONTEND=noninteractive \
   apt-get install --no-install-recommends -y \
diff --git a/Dockerfile.armhf b/Dockerfile.armhf
index d1d6d39f..601b7346 100644
--- a/Dockerfile.armhf
+++ b/Dockerfile.armhf
@@ -1,4 +1,4 @@
-FROM ghcr.io/linuxserver/baseimage-rdesktop-web:arm32v7-focal
+FROM ghcr.io/linuxserver/baseimage-rdesktop-web:arm32v7-jammy
 
 # set version label
 ARG BUILD_DATE
@@ -6,8 +6,12 @@ ARG VERSION
 LABEL build_version="Linuxserver.io version:- ${VERSION} Build-date:- ${BUILD_DATE}"
 LABEL maintainer="thelamer"
 
+# prevent Ubuntu's firefox stub from being installed
+COPY /root/etc/apt/preferences.d/firefox-no-snap /etc/apt/preferences.d/firefox-no-snap
+
 RUN \
   echo "**** install packages ****" && \
+  add-apt-repository -y ppa:mozillateam/ppa && \
   apt-get update && \
   DEBIAN_FRONTEND=noninteractive \
   apt-get install --no-install-recommends -y \
diff --git a/root/etc/apt/preferences.d/firefox-no-snap b/root/etc/apt/preferences.d/firefox-no-snap
new file mode 100644
index 00000000..9406bcc0
--- /dev/null
+++ b/root/etc/apt/preferences.d/firefox-no-snap
@@ -0,0 +1,3 @@
+Package: firefox*
+Pin: release o=Ubuntu*
+Pin-Priority: -1